分析探讨经鼻内镜下鼻腔泪囊造口术治疗慢性泪囊炎的手术方式、技巧及临床疗效。 方法：慢性泪囊炎患者38例40眼，经鼻内镜行改良泪囊鼻腔造口术，术后在鼻内镜下进行常规泪道冲洗及鼻腔清理换药。 结果：随访5~14mo，35例37眼鼻腔造口通畅，溢泪和溢脓症状消失；2眼术后3mo出现溢泪及溢脓，鼻腔造口阻塞，再次行鼻内镜下扩大造口，1例治愈，1例无效；1眼冲洗通而不畅，需加压，有冲洗液溢出。总有效率95%(38/40)。 结论：经鼻内镜改良鼻腔泪囊造口术具有创伤小、避免面部瘢痕、操作简便等特点。术中精细操作、术后加强随访，是保证疗效的重要条件。该术式是治疗慢性泪囊炎的有效方法，值得临床推广应用。

To investigate the surgical approach, techniques and clinical efficacy ofdacryocystorhinostomy under nasal endoscope in treating chronic dacryocystitis. METHODS:Thirty-eight cases (40 eyes)with chronic dacryocystitis were treated with endoscopic transnasal dacryocystorhinostomy and were rinsed the lacrimal passage and nasal cavity routinely under nasal endoscope after operation. RESULTS:After 5-14 months follow-up, the stoma inside nasal cavity of 35 patients (37 eyes)were unobstructed, the symptoms of pyorrhea and epiphora disappeared; the symptoms of pyorrhea and epiphora occured in 2 eyes 3 months after operation, the stoma inside nasal cavity were obstructed, and the stoma was expanded again under nasal endoscope, 1 case was cured, 1 case was invalid;1 eye was obstructed with rinses overflowing and needed pressurizing. The total effective rate was 95% (38/40). CONCLUSION:Endoscopic transnasal dacryocystorhinostomy has advantanges of less damage,no facial scar,easy to operate and so on.Intraoperative fine operation and strengthening follow-up after surgery are the important conditions for therapeutic effect. Endoscopic transnasal dacryocystorhinostomy is effective in the treatment of chronic dacryocystitis and worthy of clinical promotion and application.